Chinese Optics Letters, 2018, 16 (5): 052701, Published Online: Dec. 6, 2018
Generation of intensity difference squeezed state at a wavelength of 1.34 μm
Abstract
The intensity difference squeezed state, which means that the fluctuation of the intensity difference between signal and idler beams is less than that of the corresponding shot noise level (SNL), plays an important role in high sensitivity measurement, quantum imaging, and quantum random numbers generation. When an optical parametric oscillator consisting of a type-II phase-matching periodically poled KTiOPO 4 crystal operates above the threshold, an intensity difference squeezed state at a telecommunication wavelength can be obtained. The squeezing of 7.7 ± 0.5 dB below the SNL is achieved in an analysis frequency region of 2.4 – 5.0 MHz .
Meiru Huo, Jiliang Qin, Yingrong Sun, Zhihui Yan, Xiaojun Jia. Generation of intensity difference squeezed state at a wavelength of 1.34 μm[J]. Chinese Optics Letters, 2018, 16(5): 052701.